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(Nd Model.)

G. Wt ROTH. GENERATOR FOR GAS ENGINES.

Patented Dec. 31, 1895.

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AN DREW EGRANAM. PNOTU-LITHQWASHINGTON. D C.

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' ATENT Enron.

ROTH, on INDIANAPOLIS, INDIANA.

/ GENERATOR FOR GAS-ENGINES.

SPECIFICATION forming part of Letters Patent No. 552,263, dated December31, 1895.

Application filed March 2, 1895. Serial No. 540,377. (No model.)

To all whom it may concern:

Be it known that I, GILSON \V. ROTH, a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented certain new and useful Improvements in Generators forGas-Engines; and I do declare the following to be a full, clear, andexact description of the invention such as will enable others skilled inthe art to which it appertains to make and use the same, reference beinghad to the accompanying drawings, and to the letters of reference markedthereon, which form a part of this specification.

My invention relates to a generator and a gas and air regulator forthatclass of engines in which a mixture of gas or gasoline and air undercompression is ignited by an electric spark to operate the piston.

The object of my invention is to provide a generator which is operatedby the governor of the engine to control the supply of gas or gasolineand air in order that proper proportions of each may be mixed in thegenerator to supply the engine with gas and will accurately regulatesaid supply and produce a uniform speed of the engine.

A further object is to provide means to automatically cut off theelectric current from the engine-cylinder electrodes when the engine isrunning too fast and to automatically connect the circuit when theengine has assumed its normal speed.

It is obvious that a generator of this kind which mixes properproportions of air and gas to supply the engine will run the engineuniform and regular.

I have aimed to make the subject of my invention of few parts and ofsuch simple construction as to make it durable in use and economical tomanufacture.

Vith these objects in view the invention still further consists ofcertain novel details of construction and arrangement of parts, to behereinafter more fully described, and pointed out in the claims.

Referring to the drawings, Figure 1 represents my invention shown in avertical sectional view, connected by the governor of the engine. Fig. 2is aplan view of Fig. 1. Fig. 3 is a broken end view of thecircuit-breaker.

A is a generator which is preferably made cylindrical in form with acasing over the top and provided with the outlet 0 and has the bottom 12secured to same by means of bolts. Said bottom has the valve-seatprojections S integral therewith and extending upward to a suitabledistance and has the air-inlet d.

a is the valve which controls the supply of air to be mixed with thegases in the chamber.

E is the supply and controlling valve for the gas or gasoline, mountedon the top of the generator, and is provided with the inlet f, whichcommunicates with the valve F leading to the supply of gas.

4" is a mixer to thoroughly commingle the gas and air before it reachesthe cylinders.

e is the valve-stem which has a vertical movement and is provided with aconicalshaped valve g.

H is a threaded swivel to which the lever G is hinged.

I is a thumb-screw to lock the Valve-stem after the stem is properlyadjusted.

The vertical lever O is pivoted to the generator at the bottom and tothe lever at the top. The lever G is loosely attached to the governor Pat p.

J are ,upright standards from the engine to which the flexible springcircuit-connection lever K and the rigid lever L are attached.

N and M are the wires leading to the electrodes in the cylinder, whichproduce the spark to ignite the explosive materials.

R is the pipe which carries the gases to the cylinders of the engine.

In operation the stem 6 is adjusted to admit the proper proportions ofgas through the taper-valve g and also with lower end of the stem ofsufficient length to give the valve to the proper lift. After said stemis adjusted and locked by means of the thumb-screw the gas-supplystop-valve is opened and the engine is started to running at about thedesired speed; but should the engine run faster than necessary it wouldcause the centrifugal governor-balls to spread by means of its velocityand would depress the lever G, which would reduce the supply of gas andair until the engine assumed its normal speed. When the gas and airvalves are closed on account of the engine running too fast, the leverGr will assume the position shown in dotted lines in Fig. 3, which willdepress the spring-lever circuit connection K and automatically cut oifthe-circuit which prevents the electrodes in the cylinders fromproducing a spark, as at this time it will not be needed and thus savethe batteries.

It Will be manifest to a skilled mechanic that the details ofconstruction may be variously modified within the limits of my inventionwithout materially changing the mode of action.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. In combination, the chamber A, having the outlet pipe leadingtherefrom for the gas and air, the air inlet valve a within the chamber,the governor, the rod extending down through the casin g chamber A tocontrol the movement or the air valve said rod being connected to thegovernor, the gas supply pipe, the gas valve and its chamber, the saidcontrolling rod also extending through said gas valve chamber andconnecting with the gas valve to control the same, substantially asdescribed.

2. I11 combination, the chamber A, the air valve therein, the gas valvechamber, surmounting the chamber A and connected therewith by a passagein line with the air inlet valve, the gas valve in said chamber and arod passing through the gas valve chamber connected to the gas valve andhaving its lower depending free end extending through the conduitleading to the chamber A, and in line with the air valve to control thesame, substantially as described.

3. In combination, the valve chamber and valves, the valve rod, theigniting arms K, L, having the yielding contact, the governor, the leverconnection G between governor and valve rod, said lever extendingtransversely by the contact arms and arranged to separate the same whenthe valve mechanism is closed.

In testimony whereof I aifix my signature in presence of two witnesses.

GILSON W. ROTII.

itnesses:

JNO. S. THURMAN, MERRILL Moonns.

